caa a22 4500 445847115 CHVBK 20180317145402.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s10518-011-9252-8 doi (NATIONALLICENCE)springer-10.1007/s10518-011-9252-8 Assessing the seismic response of existing RC buildings using the extended N2 method [Elektronische Daten] [C. Bhatt, R. Bento] Extensive studies have confirmed the good performance of the N2 method, recommended by Eurocode8, when performing pushover analyses in regular structures. However, this procedure shows lack of accuracy in predicting the torsional motion of plan-asymmetric buildings. In order to overcome this problem, Peter Fajfar and his team have proposed an extension of the method based on a combination of a pushover analysis and of an elastic response spectrum analysis. Since definitive answers about this topic have not yet been reached, this paper intends to proceed the study applying the extended N2 method to real existing RC buildings. Three real plan-asymmetric buildings with three, five and eight storeys were assessed. The results obtained with the extended N2 method were compared with the ones evaluated by means of the original N2 and with the nonlinear dynamic analysis through the use of semi-artificial ground motions. The analyses were performed for different seismic intensities in order to evaluate the torsional response of the building through different stages of structural inelasticity. The results obtained show that the extended N2 method generally reproduces in a very good fashion the real torsional behavior of the analyzed buildings. The conclusions herein outlined, added to the ones already published by the aforementioned authors, seem to confirm that the extended N2 method can be introduced in the next version of Eurocode8 as a nonlinear static procedure capable of accurately predicting the torsional response of plan-asymmetric buildings. Springer Science+Business Media B.V., 2011 Seismic assessment nationallicence 3D pushover analysis nationallicence Extended N2 method nationallicence Real plan-asymmetric buildings nationallicence Torsion nationallicence Bhatt C. Instituto Superior Técnico, Technical University of Lisbon, Av. Rovisco Pais 1, Lisbon, Portugal aut Bento R. Instituto Superior Técnico, Technical University of Lisbon, Av. Rovisco Pais 1, Lisbon, Portugal aut Bulletin of Earthquake Engineering Springer Netherlands 9/4(2011-08-01), 1183-1201 1570-761X 9:4<1183 2011 9 10518 https://doi.org/10.1007/s10518-011-9252-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10518-011-9252-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bhatt C. Instituto Superior Técnico, Technical University of Lisbon, Av. Rovisco Pais 1, Lisbon, Portugal aut NATIONALLICENCE 700 1- Bento R. Instituto Superior Técnico, Technical University of Lisbon, Av. Rovisco Pais 1, Lisbon, Portugal aut NATIONALLICENCE 773 0- Bulletin of Earthquake Engineering Springer Netherlands 9/4(2011-08-01), 1183-1201 1570-761X 9:4<1183 2011 9 10518 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer